US3601501A - Gas compressor impeller and shaft assembly - Google Patents

Gas compressor impeller and shaft assembly Download PDF

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Publication number
US3601501A
US3601501A US14470A US3601501DA US3601501A US 3601501 A US3601501 A US 3601501A US 14470 A US14470 A US 14470A US 3601501D A US3601501D A US 3601501DA US 3601501 A US3601501 A US 3601501A
Authority
US
United States
Prior art keywords
impeller
shaft
conical surface
threaded
collar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US14470A
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English (en)
Inventor
John G Johnson
James H Anderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Applied Americas Inc
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application granted granted Critical
Publication of US3601501A publication Critical patent/US3601501A/en
Assigned to MCQUAY-PERFEX, INC., A CORP. OF MN reassignment MCQUAY-PERFEX, INC., A CORP. OF MN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WESTINGHOUSE ELECTRIC CORPORATION, A CORP. OF PA
Assigned to MCQUAY INC. reassignment MCQUAY INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MCQUAY-PREFEX INC.
Assigned to SNYDER GENERAL CORPORATION reassignment SNYDER GENERAL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MCQUAY INC.
Assigned to CITICORP INDUSTRIAL CREDIT, INC. reassignment CITICORP INDUSTRIAL CREDIT, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MCQUAY INC., A MN CORP.
Assigned to CITICORP INDUSTRIAL CREDIT INC. reassignment CITICORP INDUSTRIAL CREDIT INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SNYDERGENERAL CORPORATION
Anticipated expiration legal-status Critical
Assigned to CITICORP NORTH AMERICA, INC. reassignment CITICORP NORTH AMERICA, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SNYDERGENERAL CORPORATION, A MN CORP.
Assigned to SNYDERGENERAL CORPORATION, A CORP. OF MINNESOTA, MCQUAY INC., A CORP. OF MINNESOTA reassignment SNYDERGENERAL CORPORATION, A CORP. OF MINNESOTA RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CITICORP NORTH AMERICA, INC.
Assigned to SNYDERGENERAL CORPORATION A CORP. OF DELAWARE reassignment SNYDERGENERAL CORPORATION A CORP. OF DELAWARE RELEASE BY SECOND PARTY OF A SECURITY AGREEMENT RECORDED AT REEL 5013 FRAME 592. Assignors: CITICORP NORTH AMERICA, INC. A CORP. OF DELAWARE
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/025—Fixing blade carrying members on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
    • F16D1/093—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping
    • F16D1/095—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping with clamping effected by ring contraction only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/40—Clamping arrangements where clamping parts are received in recesses of elements to be connected
    • F16B2200/403—Threaded clamping parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7009—Rotary binding cam or wedge
    • Y10T403/7011—Radially interposed shim or bushing

Definitions

  • a centrifugal gas compressor impeller is assembled to a rotatable shaft with two friction washers having conical surfaces mating with respective opposite conical surfaces of the impeller that are concentric to a central impeller aperture through which a threaded bolt is passed and threaded into a threaded aperture at the end of the rotatable shaft.
  • the angles of concentricity for the conical surfaces of the washer are slightly different than the angles of concentricity of the mating impeller surfaces so that a friction lock is obtained between the shaft and impeller and also the impeller and washer apertures are slightly larger than the bolt shaft diameter so that an impeller centering relative to the shaft is assured during assembly.
  • Centrifugal gas compressors are used in large air-conditioning machinery where their structural and mechanical advantages over the relatively complex reciprocating gas com- 7 pressors are appreciated. Recent developments are making PRIOR ART Applicants are not aware of any prior disclosures of the use of a friction coupling in an impeller and shaft assembly for a centrifugal gas compressor as described and claimed by the present invention.
  • a centrifugal gas compressor impeller and shaft assembly is comprised of a rotatable shaft having an internally threaded endto which the impeller is to be fastened by a cap bolt passing through a central aperture of the impeller.
  • Opposite faces of the impeller are provided with central conical surfaces concentric with the aperture and these conical surfaces are preferably but not necessarily inclined upwardly such that the conical rear surface of the impeller is inclined towards the end of the shaft in the assembled relation and the conical front surface of the impeller is inclined away from the end ;of the shaft in the assembled relation.
  • a friction washer is interposed between the bolt cap and the impeller front conical surface and is provided with a mating conical surface having a slightly different angle of concentricity which in the preferred form of the invention is slightly greater than the angle of concentricity of the impeller front conical surface.
  • a friction collar washer is interposed between the rear conical surface of the impeller and the shaft end and is provided with a mating conical surface having a slightly different angle of concentricity which in the preferred form of the invention is slightly greater than the angle of concentricity of the impeller rear conical surface.
  • the end of the friction collar washer adjacent the impeller shaft in the assembled relation is counterbored slightly to provide a collar surface to overlie the shaft end to thereby provide a friction grip on the-shaft when the cap bolt is tightened to compress the friction washers and complete the assembly.
  • the apertures of the friction washers and the impeller are slightly larger than the diameter of the shaft of the cap bolt so that a centering of the impeller and shaft is obtained by the interactions of the concentric surfaces when the bolt is tightened to complete the assembly.
  • FIG. 1 is a fragmentary sectional side elevational view of a gas compressor for an air-conditioning machine employing the impeller and shaft assembly of the invention
  • FIG. 2 is an enlarged side elevational view partly in section of the impeller and shaft assembly of the invention.
  • FIG. 3 is an exploded view similar to FIG 2 but showing the parts in the disassembled relation prior to assembly.
  • the centrifugal gas compressor as may be used in an air-conditioning machine or the like is shown to include a compressed gas collecting scroll l0, and a centrifugal impeller 11 concentric therewith.
  • the impeller 11 is secured to the end of a rotatable shaft 12 that is driven by the pinion gear 13 and the bull gear 14.
  • Suitable bearings including thrust bearings at the end of the shaft (not invention, it will be seen that the rotatable shaft 12 is provided 1 with an internally threaded bore or aperture 20 at its endto which the impeller l l is to be secured.
  • a cap bolt 21 having a threaded shaft 22 is passed through a central aperture 23 of the impeller 11 and is threaded into the threaded aperture 20 of the rotatable shaft 12.
  • the front side of the impeller 11 is provided with a first conical surface 24 centrally located and concentric to the impeller aperture 23.
  • the rear surface of the impeller 11 is also provided with a conical surface 25 that is centrally located and concentric to the impeller aperture 23.
  • a friction washer 26 is interposed between the cap bolt 21 and v the fist conical surface 24 on the front side of the impeller 11.
  • the friction washer 26 is provided with a mating conical surface 28 that contacts the conical surface 24 of the impeller I l in the assembled relation.
  • a friction collar washer 30 is inter posed between the rear conical surface 25 of the impeller and the threaded end of the rotatable shaft 12.
  • the collar washer 30 is provided with a mating conical surface 31 that contacts the conical surface 25 on the rear of the impeller 11 in the assembled relation.
  • the front conical surface 24 is inclined upwardly to extend away from the threaded end of the rotatable shaft 12 in the assembled relation while the rear conical surface 25 is also extended upwardly to extend towards the threaded end of the rotatable shaft 12 in the assembled relation.
  • the conical surfaces 24 or 25 of the impeller may be inclined in other directions provided that the mating conical surfaces of the related friction washers are also similarly inclined.
  • the angle of concentricity for the inclined or conical surface 28 of the first friction washer 26 is slightly different than the angle of concentricity for the conical surface 28 0f the impeller and also the angle of concentricity for the conical surface 31 of the second friction washer 30 is slightly different than the angle of concentricity for the rear conical surface 25 of the impeller 1 1.
  • the angle of inclination forthe conical surface 28 of the washer 26 is slightly greater from the vertical than the'angle of inclination for the conicalsurface 24 of the impeller 11.
  • the angle of inclination for the conical surface 31 of the second washer 30 is slightly greater from the vertical than the angle of inclination for the conical surface 25 of the impeller 11.
  • the preferred form of the invention provides that the central apertures for the impeller 11 and the respective friction washers 26 and 30 are slightly larger in diameter than the diameter of the shaft 22 of the bolt 21.
  • the impeller 11 when assembling the impeller 11 on the end of the rotatable shaft 12 by tightening the bolt 21 the impeller 11 is free to move slightly and the interaction of the concentric surfaces of the impeller and washers provides an effective centering action for centering the impeller 11 relative to the shaft 12 and its threaded central aperture 20.
  • a rotatable gas compressor impeller and shaft assembly comprising, a rotatable shaft having a threaded axial bore at one end, an impeller having an axial bore therethrough and adapted to be assembled to the front of the threaded end of said shaft with a capped fastening bolt having a threaded shaft passing through the impeller axial bore and threaded into said shaft bore, the respective front and back faces of said impeller having respective first and second conical surfaces coaxial to the impeller bore and said surfaces being oppositely inclined, a first apertured friction washer adapted to receive the shaft of said bolt and to be interposed between the first conical surface of said impeller and the cap of said bolt and having a mating conical surface coaxial with its aperture adjacent the first conical surface in the assembled relation, the angle of inclination of the mating surface of the first washer being slightly different than the angle of inclination of the first conical surface of the impeller, a friction collar washer having an aperture adapted to receive the shaft of said bolt and to be interposed between the second conical

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US14470A 1970-02-26 1970-02-26 Gas compressor impeller and shaft assembly Expired - Lifetime US3601501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1447070A 1970-02-26 1970-02-26

Publications (1)

Publication Number Publication Date
US3601501A true US3601501A (en) 1971-08-24

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Application Number Title Priority Date Filing Date
US14470A Expired - Lifetime US3601501A (en) 1970-02-26 1970-02-26 Gas compressor impeller and shaft assembly

Country Status (7)

Country Link
US (1) US3601501A (es)
BE (1) BE763358A (es)
CA (1) CA940898A (es)
DE (1) DE2106208B2 (es)
ES (1) ES388624A1 (es)
FR (1) FR2079044A5 (es)
GB (1) GB1285524A (es)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914067A (en) * 1973-11-30 1975-10-21 Curtiss Wright Corp Turbine engine and rotor mounting means
US3941506A (en) * 1974-09-05 1976-03-02 Carrier Corporation Rotor assembly
US4032256A (en) * 1975-11-14 1977-06-28 Viktor Arsentievich Tatkov Centrifugal pump
US4074946A (en) * 1976-07-28 1978-02-21 Swearingen Judson S Shaft-rotor coupling
US4083641A (en) * 1976-04-10 1978-04-11 Yoshida Kogyo K.K. T-Shaped structural joint
US4213307A (en) * 1978-11-13 1980-07-22 Westinghouse Electric Corp. Oil separation and return system for centrifugal refrigerant compressors
EP0016643A1 (en) * 1979-03-21 1980-10-01 McQUAY-PERFEX INC. Impeller and shaft assembly for high speed gas compression
WO2000060241A1 (de) * 1999-04-03 2000-10-12 Leybold Vakuum Gmbh Rotorbefestigung einer reibungsvakuumpumpe
WO2001040660A3 (en) * 1999-12-03 2002-01-17 American Standard Inc Centrifugal impeller assembly
US20040126251A1 (en) * 2002-10-24 2004-07-01 Anthony Billington Compressor wheel assembly
US20050191122A1 (en) * 2004-03-01 2005-09-01 Gethmann Douglas P. Locking mechanism for a threaded connection
US20060127243A1 (en) * 2004-12-14 2006-06-15 Vaccarezza Stephen E Compressor wheel
US20070237646A1 (en) * 2005-09-08 2007-10-11 Hamilton Sundstrand Corporation Mechanical coupling for a rotor shaft assembly of dissimilar materials
US20120003093A1 (en) * 2009-03-25 2012-01-05 Borgwarner Inc. Reduction of turbocharger core unbalance with centering device
US20120189452A1 (en) * 2010-07-20 2012-07-26 Itt Manufacturing Enterprises, Inc. Impeller Attachment Method
CN102734216A (zh) * 2012-07-18 2012-10-17 无锡杰尔压缩机有限公司 一种离心鼓风机的高速转子结构
US20140072444A1 (en) * 2012-09-13 2014-03-13 Andreas Eleftheriou Rotor assembly
US10267335B1 (en) * 2015-09-23 2019-04-23 Anthony Freakes Methods and apparatus for mounting an impeller with positional repeatability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20003878U1 (de) 2000-03-02 2000-05-31 Siemens AG, 80333 München Pumpe oder Verdichter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US776935A (en) * 1904-05-09 1904-12-06 John Vernon Pugh Fastening for wheels and cranks.
US924334A (en) * 1905-02-09 1909-06-08 Fouch Disc Wheel Company Vehicle-wheel.
US2345910A (en) * 1939-01-04 1944-04-04 Nasa Connection for elements of rotatable units
US2351356A (en) * 1943-12-24 1944-06-13 Federal Mogul Corp Propeller inhibitor
US2602683A (en) * 1945-03-03 1952-07-08 Sulzer Ag Rotor for turbomachines
US2726524A (en) * 1953-09-23 1955-12-13 Paul X Gorin Friction drive coupling with overload slip
US3467419A (en) * 1963-04-08 1969-09-16 Borg Warner Means for securing a rotor on a shaft

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US776935A (en) * 1904-05-09 1904-12-06 John Vernon Pugh Fastening for wheels and cranks.
US924334A (en) * 1905-02-09 1909-06-08 Fouch Disc Wheel Company Vehicle-wheel.
US2345910A (en) * 1939-01-04 1944-04-04 Nasa Connection for elements of rotatable units
US2351356A (en) * 1943-12-24 1944-06-13 Federal Mogul Corp Propeller inhibitor
US2602683A (en) * 1945-03-03 1952-07-08 Sulzer Ag Rotor for turbomachines
US2726524A (en) * 1953-09-23 1955-12-13 Paul X Gorin Friction drive coupling with overload slip
US3467419A (en) * 1963-04-08 1969-09-16 Borg Warner Means for securing a rotor on a shaft

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914067A (en) * 1973-11-30 1975-10-21 Curtiss Wright Corp Turbine engine and rotor mounting means
US3941506A (en) * 1974-09-05 1976-03-02 Carrier Corporation Rotor assembly
US4032256A (en) * 1975-11-14 1977-06-28 Viktor Arsentievich Tatkov Centrifugal pump
US4083641A (en) * 1976-04-10 1978-04-11 Yoshida Kogyo K.K. T-Shaped structural joint
US4074946A (en) * 1976-07-28 1978-02-21 Swearingen Judson S Shaft-rotor coupling
US4213307A (en) * 1978-11-13 1980-07-22 Westinghouse Electric Corp. Oil separation and return system for centrifugal refrigerant compressors
EP0016643A1 (en) * 1979-03-21 1980-10-01 McQUAY-PERFEX INC. Impeller and shaft assembly for high speed gas compression
US4257744A (en) * 1979-03-21 1981-03-24 Westinghouse Electric Corp. Impeller and shaft assembly for high speed gas compressor
WO2000060241A1 (de) * 1999-04-03 2000-10-12 Leybold Vakuum Gmbh Rotorbefestigung einer reibungsvakuumpumpe
US6599084B1 (en) 1999-04-03 2003-07-29 Leybold Vakuum Gmbh Rotor fixture for a friction vacuum pump
WO2001040660A3 (en) * 1999-12-03 2002-01-17 American Standard Inc Centrifugal impeller assembly
US20040126251A1 (en) * 2002-10-24 2004-07-01 Anthony Billington Compressor wheel assembly
US20050191122A1 (en) * 2004-03-01 2005-09-01 Gethmann Douglas P. Locking mechanism for a threaded connection
US7722336B2 (en) * 2004-12-14 2010-05-25 Honeywell International Inc. Compressor wheel
US20060127243A1 (en) * 2004-12-14 2006-06-15 Vaccarezza Stephen E Compressor wheel
US20070237646A1 (en) * 2005-09-08 2007-10-11 Hamilton Sundstrand Corporation Mechanical coupling for a rotor shaft assembly of dissimilar materials
US7527479B2 (en) * 2005-09-08 2009-05-05 Hamilton Sundstrand Corporation Mechanical coupling for a rotor shaft assembly of dissimilar materials
US8944771B2 (en) * 2009-03-25 2015-02-03 Borgwarner Inc. Reduction of turbocharger core unbalance with centering device
US20120003093A1 (en) * 2009-03-25 2012-01-05 Borgwarner Inc. Reduction of turbocharger core unbalance with centering device
US20120189452A1 (en) * 2010-07-20 2012-07-26 Itt Manufacturing Enterprises, Inc. Impeller Attachment Method
US11255340B2 (en) 2010-07-20 2022-02-22 Itt Manufacturing Enterprises Llc Impeller attachment method
CN102734216A (zh) * 2012-07-18 2012-10-17 无锡杰尔压缩机有限公司 一种离心鼓风机的高速转子结构
US9353626B2 (en) * 2012-09-13 2016-05-31 Pratt & Whitney Canada Corp. Rotor assembly
EP2708698A3 (en) * 2012-09-13 2017-04-12 Pratt & Whitney Canada Corp. Rotor Assembly
US20140072444A1 (en) * 2012-09-13 2014-03-13 Andreas Eleftheriou Rotor assembly
US10267335B1 (en) * 2015-09-23 2019-04-23 Anthony Freakes Methods and apparatus for mounting an impeller with positional repeatability

Also Published As

Publication number Publication date
FR2079044A5 (es) 1971-11-05
CA940898A (en) 1974-01-29
ES388624A1 (es) 1974-02-16
GB1285524A (en) 1972-08-16
DE2106208A1 (de) 1971-09-02
DE2106208C3 (es) 1980-06-19
DE2106208B2 (de) 1979-10-11
BE763358A (fr) 1971-08-24

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